elitmus Company Numerical Ability Number System

a,b,c,d are conscutive odd no. then a^2|b^2|c^2|d^2 is divisible by....
a)5 b)7 c)3 d)4

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elitmus Other Question

how many six digits numbers can be formed using the digits 1to 6, without repetition. such that the number is divisible by the digits at its unit place Elitmus %tile verbal 98% quants 95%
Ps 85%
What r the chances?